There are a several creative pairs of artists who present themselves as one entity. Each piece of their work is a symbiosis of a mutual cooperation. Only with the arrival of the avant-garde the phenomenon of artistic cooperatives starts occurring systematically.A variety of collective signatures of art associations, groups and couples alongside individual artist push the borderline of authorship. The exhibition Two Heads, Four Hands introduces works of art of a several artistic duos who worked in Czechoslovakia, even though in some cases one person of the couple was a foreigner.

The interconnecting points of the duos are based on pair symmetry, mirror reflection, optical illusion, on the ability to dialogue and on the identity game and irony.Although a functioning within a couple is primarily a natural principal, in the world of art it is more of a rarity.